1. Direct vision endoscopic cytology and biopsy in the diagnosis of esophageal and gastric tumors;Prolla, J.C.; Reilly, R.W.; Kirsner, J.B.; Cockerham, L.;Acta Cytol,1977
2. Endoscopic cytology of the esophagus, stomach and pancreas;Kasugai, T.; Kobayashi, S.; Kuno, N.;Acta Cytol,1978
3. Cytology in the diagnosis of oesophageal cancer;Hishon, S.; Lovell, D.; Gummer, J.W.P.; Smithies, A.; Shawdon, H.; Blendis, L.M.;Lancet,1976
4. Comparison of brush cytology before and after biopsy for diagnosis of gastric carcinoma;Keighley, M.R.B.; Thompson, H.; Moore, J.; Hoare, A.M.; Allen, R.N.; Dykes, P.W.;Br J Surg,1979
5. Report of a three year trial of endoscopic cytology of the stomach and duodenum;Young, J.A.; Hughes, H.E.